Grinding machine



Jan. 5, 1926.

1,568,185 w. s. RQGERS GRINDING MACHINE 1 Filed Feb. -14, 1925 Patented Jan. 5, 1926.

v UNITED STATES estate PATanT ()FFICE,

WINFIELD S. ROGERS, OF BANTAM, CONNECTICUT, ASSIGlNOR T NELLIE SCOT'J. ROGERS, OE BANTAM, CONNECTICUT.

GRINDING ilmcnnm.

Application filed February 14, 1925. Serial- No. 9,237.

To all whom it may concern:

Be-it known that I, Wmrrnan S. Roonas,

a citizen of the United States, residing at Bantam, in the county of Litchfield and State of Connecticut, have invented certain new and useful Improvements in Grinding Machines, of which the following is a specification.

This invention relates to grinding machines, and more especially to that type known as centerless. c

Its primary object is to provide a centerless grinder of economical construction, whereby one abrasive wheel shall do the work usually required of two. vOther objects are to provide a centerless grinder equipped with means whereby the waste material may be washed away ahead of the work; that shall conveniently dispose of the Washing material so used; and that shall speedily accomplish the work for which the machine is designed.

To accomplish these objects, Ihave provided a machine comprising a frame, a vertical abrasive WheeLsuitabIe' power means connected with said wheel, a work-guide attached to a movable block with suitable adjusting means, facilities for feeding workto the machine in a vertical position, .a method for coolingsaid wheel and for keeping its grinding surface and the work free from grit and other waste material.

In the drawings, Figure 1 'is a longitudinal vertical section of the machine herein Figure 2 is a to view of the same; and Figure 3 is a detail front-view of the mobile block and work-guide, taken, at a right-angle to its normal position. K

A represents the abrasive wheel, B the work-guide, C the movable block, D a screw with handle, for adjusting B and C in relation to A, E a conduit for the cooling and washing element, F an electric motor, H pieces of work passing throu h the machine, J a receptacle for the cooling element, K an opening giving access to J, L the frame,

M lag-screws, and N slots in B for adjustin urposes.

e useof a vertical grinding wheel furnishes a more efiective means for removing the 't and other fines from the abrasive whee and from the object being ground, because of the ap lication from overhead of the cooling liqui than is possible with any by reason of this tangential concavity, is cadescribed, the grinding wheel in elevation;

other type of wheel. It also provides a superior facility for feeding the work, either automatically or manually.

The movable block G contains a concave V-shaped work-guide B, that is capable of being set at a tangent, and is provided with curved slotted apertures N, whereby E is capable of rotary adjustment for fixing the tangential degree required. The work-guide,

Q pable of regulating the eriod during which the work H is to be su jected to the operation of the grinding-wheel A; the greater its angularity to the vertical surface of said wheel, the shorter the period of grinding, and co converso.

The motor F is shown as a preferred means for furnishing power to the wheel A. The opening K may be of any desired shape or in any desired location, and is preferably provided with a closure. I

In operation, the machine is set, by means of the wheel and screw D, with its workguide B at the desired distance from the grinding-wheel A, with reference to the size of the object to be round or the size to which it is to be re need; the work-guide adjusted to the proper angle, the power turned on, and the work is fed to the ma chine by placingthe objects H in the V- groove of the guide B. Any suitable means, such as a hopper and trough, may be employed as an automatic feeder, or the feedmg may be by hand. The goose-neck E illustrates a convenient means for applying the cooling and washing medium, either by gravity or forced from a pump. Thepump may be integral with the machine, and the cooling and washing medium re-used from the pan J. The finished work may be allowed to fall into said pan, or it can be diverted in another direction.

Many of the features herein shown and described are already familiar, and are not alleged to be novel. I

I claim:

1. A grinding machine comprising a single abrasive wheel rotatable upon a vertical axis, its grinding surface being parallel to the said axis, a vertical mobile block with an 105 adjustable work-guide thereon, said wheel being capable of rotating and grindin the surfaces of cylindrical objects fed ownwardly between said wheel and said guide, and means for supplying a cooling-medium to the said grinding-wheel and to the object being ground, at and in advance of their point of contact.

2. In combination, a single abrasive wheel revolvable upon a vertical axis, the cutting surface being the periphery of said Wheel, an adjustable work-guide capable of holding and downwardly directing in a substantially vertical course against said cutting surface the object to be ground, a means for applying a cooling medium to said cutting surface vertically downward so as to positively free the grinding wheel and the work from all fines and grit, and a' frame-work containing and supporting said members.

In testimony whereof I have hereto affixed my signature.

WINFIELD S. ROGERS. 

